专门机关与广大群众相结合的方针，是指导( )。A．刑事侦查工作的基本方针 B．治安

读句子，根据汉语或首字母提示补全单词。

1. The policeman told that man to give a ________ (描述) of the accident.

2. W_______ is the third day of a week.

3. We are often told not to be ________ (紧张) in the examinations.

4. The weather in South China is d________ from that in North China.

5. That book is well ________ (值得) reading. You'd better read it.

在电子商务运营中，买卖双方需要建议彼此的信任。因此，建立并完善企业、消费者在线交易的（）非常重要。

A.配送机制

B.洽谈机制

C.协调机制

D.信用机制

血细胞是血液的组成成分．______．

在21世纪，家庭的格局将是占主导地位的（）共存。

鱼类生理学